This tool should be used as a guide only. Conseal Touch-Up may not be an exact match for Hempatex Hi-Build 4637 by but we have given the closest match we can. Conseal Touch-Up should do the same job and have similar properties but you should always read the technical data sheets for both Conseal Touch-Up and Hempatex Hi-Build 4637 to be sure. Please see any notes to see any major differences and call us on 01285 862132 if you have any specific questions.